Finding the Fourth Proportional to 117,726.80, 162,465.01 and 64,012.16

Step by Step Solution

1. Step 1: Write the proportion equation
   117,726.80 : 162,465.01 = 64,012.16 : x
2. Step 2: Convert to fraction form
   117,726.80/162,465.01 = 64,012.16/x
3. Step 3: Cross multiply
   117,726.80x = 162,465.01 × 64,012.16
4. Step 4: Simplify right side
   117,726.80x = 10,399,736,460.65
5. Step 5: Solve for x
   x = 10,399,736,460.65/117,726.80
6. Step 6: Final answer
   x = 88,337.89